15 of the most toxic places to live: La Oroya, Peru

The 15 most toxic places to live

La Oroya, Peru

La Oroya is a soot-covered mining town in the Peruvian Andes. About 99 percent of the children who live here have blood levels that exceed acceptable limits for lead poisoning, which can be directly attributed to an American-owned smelter that has been polluting the city since 1922.